Use the average bond enthalpies given (in kJ mol⁻¹) to determine for the reaction at

CHEMISTRY · Subjective · A Level · Chemistry · Energetics · Energetics

Problem

Use the average bond enthalpies given (in kJ mol⁻¹) to determine

\Delta H

for the reaction at

298\,\text{K}

.\ CH₄(g) + Cl₂(g) → CH₃Cl(g) + HCl(g)\ C–H 414 Cl–Cl 242 C–Cl 327 H–Cl 431\ Report your answer to the nearest kilojoule per mole.